The rules on armed conflict on Earth are a major source of restraint on military operations. But the rules on the use of weapons in outer space are far from clear. We need to change that.
The latest data from the Dawn space probe points to underground ice flows and a water vapour atmosphere.
Mysterious radiation that appears to come from star HD 164595 is more likely to have a terrestrial origin.
Our growing dependency on satellites for all forms of communication has made the problem of space weather even more acute.
Films set in the ancient world can no longer adequately live up to the demands of the 'epic'. Instead, we should look to films set in space.
The vast majority of matter in the universe is plasma: electrically charged gas. Scientists are untangling how dust interacts with plasma both in space and experimentally closer to home.
The annual Perseid meteor shower gives us a glimpse of remnants from the early formation of the solar system.
Getting to Mars with current rocket technology will use massive amounts of fuel to move very small cargoes. There is a more fuel-efficient way.
What viewing on the International Space Station tells us about life among the stars.
Increasing Australia's role in the billion-dollar global space industry has hardly raised a mention in this year's federal election campaign.
Scientists are working out how to grow plants in space, ready to use them as food when we visit other planets.
NASA's Asteroid Redirect Mission has had its funding cut. Here's why politicians should think again.
Just about anyone can get a tiny, cheap satellite into orbit these days. As we consider how to deploy them responsibly, inspiration comes from an amateur community of enthusiasts.
After half a century of trying, scientists have finally caught a glimpse of the magnetic process that fuels space weather and the northern lights.
The increasingly rapid pace of exoplanet discoveries must mean it is only a matter of time until astronomers find another Earth.
A philosopher argues that now is the time to figure it out, before we make the inevitable discovery of extraterrestrial life.
Why weightlessness in space is about balancing forces rather than a lack of gravity.
It's an ambitious plan to send a micro-spaceship to our stellar neighbour but is this possible with today's technology or even technology in the near future?
Building a tiny starship may be doable. The big challenge will be making sure it survives all the hazards in interstellar space.
Yes, it really is rocket science.